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if ln(3-y)= X^(2)+5x-7, y=?It's a log problem and I HAVE NO IDEA! Also could I have...

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andreaeverett | Student, Grade 11 | eNotes Newbie

Posted July 28, 2012 at 12:29 AM via web

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if ln(3-y)= X^(2)+5x-7, y=?

It's a log problem and I HAVE NO IDEA! Also could I have some help with

If y=ln(x), x=? Thanks :)

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beckden | High School Teacher | (Level 1) Educator

Posted July 28, 2012 at 2:09 AM (Answer #1)

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You can solve for y by raising e to both sides and then solving for y

`e^(ln(3-y))=e^(x^2+5x-7)`

` 3-y = e^(x^2+5x-7)`

`y = 3 - e^(x^2+5x-7)`

 

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